NAME

       Net::DNS::Question - DNS question record

SYNOPSIS

           use Net::DNS::Question;

           $question = Net::DNS::Question->new('example.com', 'AAAA', 'IN');

DESCRIPTION

       A Net::DNS::Question object represents a record in the question section of a DNS packet.

METHODS

   new
           $question = Net::DNS::Question->new('example.com', 'AAAA', 'IN');
           $question = Net::DNS::Question->new('example.com', 'A', 'IN');
           $question = Net::DNS::Question->new('example.com');

           $question = Net::DNS::Question->new('2001::DB8::dead:beef', 'PTR', 'IN');
           $question = Net::DNS::Question->new('2001::DB8::dead:beef');

       Creates a question object from the domain, type, and class passed as arguments. One or
       both type and class arguments may be omitted and will assume the default values shown
       above.

       RFC4291 and RFC4632 IP address/prefix notation is supported for queries in both
       in-addr.arpa and ip6.arpa namespaces.

   decode
           $question = Net::DNS::Question->decode(\$data, $offset);

           ($question, $offset) = Net::DNS::Question->decode(\$data, $offset);

       Decodes the question record at the specified location within a DNS wire-format packet.
       The first argument is a reference to the buffer containing the packet data.  The second
       argument is the offset of the start of the question record.

       Returns a Net::DNS::Question object and the offset of the next location in the packet.

       An exception is raised if the object cannot be created (e.g., corrupt or insufficient
       data).

   encode
           $data = $question->encode( $offset, $hash );

       Returns the Net::DNS::Question in binary format suitable for inclusion in a DNS packet
       buffer.

       The optional arguments are the offset within the packet data where the Net::DNS::Question
       is to be stored and a reference to a hash table used to index compressed names within the
       packet.

   string
           print "string = ", $question->string, "\n";

       Returns a string representation of the question record.

   print
           $object->print;

       Prints the record to the standard output.  Calls the string() method to get the string
       representation.

   name
           $name = $question->name;

       Internationalised domain name corresponding to the qname attribute.

       Decoding non-ASCII domain names is computationally expensive and undesirable for names
       which are likely to be used to construct further queries.

       When required to communicate with humans, the 'proper' domain name should be extracted
       from a query or reply packet.

           $query = Net::DNS::Packet->new( $example, 'SOA' );
           $reply = $resolver->send($query) or die;
           ($question) = $reply->question;
           $name = $question->name;

   qname, zname
           $qname = $question->qname;
           $zname = $question->zname;

       Fully qualified domain name in the form required for a query transmitted to a nameserver.
       In dynamic update packets, this attribute is known as zname() and refers to the zone name.

   qtype, ztype, type
           $qtype = $question->type;
           $qtype = $question->qtype;
           $ztype = $question->ztype;

       Returns the question type attribute.  In dynamic update packets, this attribute is known
       as ztype() and refers to the zone type.

   qclass, zclass, class
           $qclass = $question->class;
           $qclass = $question->qclass;
           $zclass = $question->zclass;

       Returns the question class attribute.  In dynamic update packets, this attribute is known
       as zclass() and refers to the zone class.

COPYRIGHT

       Copyright (c)1997-2000 Michael Fuhr.

       Portions Copyright (c)2002,2003 Chris Reinhardt.

       Portions Copyright (c)2003,2006-2011 Dick Franks.

       All rights reserved.

LICENSE

       Permission to use, copy, modify, and distribute this software and its documentation for
       any purpose and without fee is hereby granted, provided that the original copyright
       notices appear in all copies and that both copyright notice and this permission notice
       appear in supporting documentation, and that the name of the author not be used in
       advertising or publicity pertaining to distribution of the software without specific prior
       written permission.

       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
       INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
       PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
       FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
       OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
       DEALINGS IN THE SOFTWARE.

SEE ALSO

       perl, Net::DNS, Net::DNS::DomainName, Net::DNS::Packet, RFC 1035 Section 4.1.2